'Castle' sneak peek: Watch Lanie heat it up in '70s-themed episode

In this exclusive sneak peek, Castle (Nathan Fillion) and Beckett (Stana Katic) have to play along when their sole witness in a case is seemingly trapped in a ’70s frame of mind — and even Lanie (Tamala Jones) gets into the action.

Her extreme commitment to murder-solving can be seen below. It’s pretty amazing: